diff options
Diffstat (limited to 'crypto/cryptomgr.c')
| -rw-r--r-- | crypto/cryptomgr.c | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/crypto/cryptomgr.c b/crypto/cryptomgr.c deleted file mode 100644 index e5e3cf8..0000000 --- a/crypto/cryptomgr.c +++ /dev/null @@ -1,222 +0,0 @@ -/* - * Create default crypto algorithm instances. - * - * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - * - */ - -#include <linux/crypto.h> -#include <linux/ctype.h> -#include <linux/err.h> -#include <linux/init.h> -#include <linux/kthread.h> -#include <linux/module.h> -#include <linux/notifier.h> -#include <linux/rtnetlink.h> -#include <linux/sched.h> -#include <linux/string.h> - -#include "internal.h" - -struct cryptomgr_param { - struct rtattr *tb[CRYPTO_MAX_ATTRS + 2]; - - struct { - struct rtattr attr; - struct crypto_attr_type data; - } type; - - union { - struct rtattr attr; - struct { - struct rtattr attr; - struct crypto_attr_alg data; - } alg; - struct { - struct rtattr attr; - struct crypto_attr_u32 data; - } nu32; - } attrs[CRYPTO_MAX_ATTRS]; - - char larval[CRYPTO_MAX_ALG_NAME]; - char template[CRYPTO_MAX_ALG_NAME]; -}; - -static int cryptomgr_probe(void *data) -{ - struct cryptomgr_param *param = data; - struct crypto_template *tmpl; - struct crypto_instance *inst; - int err; - - tmpl = crypto_lookup_template(param->template); - if (!tmpl) - goto err; - - do { - inst = tmpl->alloc(param->tb); - if (IS_ERR(inst)) - err = PTR_ERR(inst); - else if ((err = crypto_register_instance(tmpl, inst))) - tmpl->free(inst); - } while (err == -EAGAIN && !signal_pending(current)); - - crypto_tmpl_put(tmpl); - - if (err) - goto err; - -out: - kfree(param); - module_put_and_exit(0); - -err: - crypto_larval_error(param->larval, param->type.data.type, - param->type.data.mask); - goto out; -} - -static int cryptomgr_schedule_probe(struct crypto_larval *larval) -{ - struct task_struct *thread; - struct cryptomgr_param *param; - const char *name = larval->alg.cra_name; - const char *p; - unsigned int len; - int i; - - if (!try_module_get(THIS_MODULE)) - goto err; - - param = kzalloc(sizeof(*param), GFP_KERNEL); - if (!param) - goto err_put_module; - - for (p = name; isalnum(*p) || *p == '-' || *p == '_'; p++) - ; - - len = p - name; - if (!len || *p != '(') - goto err_free_param; - - memcpy(param->template, name, len); - - i = 0; - for (;;) { - int notnum = 0; - - name = ++p; - len = 0; - - for (; isalnum(*p) || *p == '-' || *p == '_'; p++) - notnum |= !isdigit(*p); - - if (*p == '(') { - int recursion = 0; - - for (;;) { - if (!*++p) - goto err_free_param; - if (*p == '(') - recursion++; - else if (*p == ')' && !recursion--) - break; - } - - notnum = 1; - p++; - } - - len = p - name; - if (!len) - goto err_free_param; - - if (notnum) { - param->attrs[i].alg.attr.rta_len = - sizeof(param->attrs[i].alg); - param->attrs[i].alg.attr.rta_type = CRYPTOA_ALG; - memcpy(param->attrs[i].alg.data.name, name, len); - } else { - param->attrs[i].nu32.attr.rta_len = - sizeof(param->attrs[i].nu32); - param->attrs[i].nu32.attr.rta_type = CRYPTOA_U32; - param->attrs[i].nu32.data.num = - simple_strtol(name, NULL, 0); - } - - param->tb[i + 1] = ¶m->attrs[i].attr; - i++; - - if (i >= CRYPTO_MAX_ATTRS) - goto err_free_param; - - if (*p == ')') - break; - - if (*p != ',') - goto err_free_param; - } - - if (!i) - goto err_free_param; - - param->tb[i + 1] = NULL; - - param->type.attr.rta_len = sizeof(param->type); - param->type.attr.rta_type = CRYPTOA_TYPE; - param->type.data.type = larval->alg.cra_flags; - param->type.data.mask = larval->mask; - param->tb[0] = ¶m->type.attr; - - memcpy(param->larval, larval->alg.cra_name, CRYPTO_MAX_ALG_NAME); - - thread = kthread_run(cryptomgr_probe, param, "cryptomgr"); - if (IS_ERR(thread)) - goto err_free_param; - - return NOTIFY_STOP; - -err_free_param: - kfree(param); -err_put_module: - module_put(THIS_MODULE); -err: - return NOTIFY_OK; -} - -static int cryptomgr_notify(struct notifier_block *this, unsigned long msg, - void *data) -{ - switch (msg) { - case CRYPTO_MSG_ALG_REQUEST: - return cryptomgr_schedule_probe(data); - } - - return NOTIFY_DONE; -} - -static struct notifier_block cryptomgr_notifier = { - .notifier_call = cryptomgr_notify, -}; - -static int __init cryptomgr_init(void) -{ - return crypto_register_notifier(&cryptomgr_notifier); -} - -static void __exit cryptomgr_exit(void) -{ - int err = crypto_unregister_notifier(&cryptomgr_notifier); - BUG_ON(err); -} - -module_init(cryptomgr_init); -module_exit(cryptomgr_exit); - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("Crypto Algorithm Manager"); |
